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Endoscopic stereo matching method and apparatus using direct attenuation model

a stereo matching and direct attenuation technology, applied in the field of endoscopic stereo matching, can solve the problems of inability to estimate depth information, and the geometric structure of the gi tract captured by a wce may not be estimated

Active Publication Date: 2019-12-05
KOREA ELECTRONICS TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent describes how to get a detailed picture of the inside of the gastrointestinal tract using images from a capsule endoscope. This allows for the accurate identification of disease symptoms and the ability to diagnose and treat them precisely.

Problems solved by technology

However, commercially available WCE products are not capable of estimating depth information and thus the geometric structure of the GI tract captured by a WCE may not be estimated.

Method used

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  • Endoscopic stereo matching method and apparatus using direct attenuation model
  • Endoscopic stereo matching method and apparatus using direct attenuation model
  • Endoscopic stereo matching method and apparatus using direct attenuation model

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Embodiment Construction

[0032]Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings.

[0033]Embodiments of the present disclosure suggest a method for estimating depth by using binocular images obtained from the digestive system ((the duodenum, stomach, small bowel, large bowel, etc.) through stereo camera-based wireless capsule endoscopy.

[0034]Specifically, embodiments of the present disclosure grasp the structure of the digestive system by using the attenuation trend of light of an illumination mounted in an endoscope by considering that there is no other external light source except the illumination mounted in the endoscope, and estimate an exact depth image by using corresponding information in stereo matching.

[0035]In addition, embodiments of the present disclosure estimate a scale factor by using sparse feature correspondences (SFC), and guide stereo matching to recover the detailed structure of a captured image by using the estimated depth image.

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Abstract

An endoscopic stereo matching method and apparatus using a direct attenuation model is provided. A method for generating a depth image according to an embodiment includes: generating a stereo image; and estimating a depth image from the stereo image based on an attenuation trend of light of an illumination used to generate the stereo image. Accordingly, a dense depth image can be obtained by using images obtained from a capsule endoscope, and thus the geometric structure of the inside of the GI tract can be estimated.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) AND CLAIM OF PRIORITY[0001]This application is based on and claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2018-0062438, filed on May 31, 2018, in the Korean Intellectual Property Office, the disclosure of which is herein incorporated by reference in its entirety.BACKGROUNDField[0002]The present disclosure relates generally to image processing technology, and more particularly, to a method for estimating depth by using binocular images obtained from the digestive system (the duodenum, stomach, small bowel, large bowel. etc.) through a capsule endoscope.Description of Related Art[0003]The wireless capsule endoscope (WCE) is a useful device to collect images of the gastrointestinal (GI) tract for screening, diagnostic and therapeutic endoscopic procedures. The WCE may capture the images of the small bowel where a wired endoscopic device cannot reach.[0004]To recognize depth from endoscopic images, various computer vi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B1/05A61B1/06H04N13/239H04N5/225
CPCA61B1/0684H04N2005/2255A61B1/05H04N2013/0081H04N5/2256H04N13/239A61B1/0676H04N5/2226A61B1/00193A61B1/00009A61B1/041H04N13/254G06T7/593G06T7/571G06T2207/10028G06T2207/10068H04N23/56H04N23/555
Inventor PARKHWANG, YOUNG BAEYOON, JU HONG
Owner KOREA ELECTRONICS TECH INST